A Black Hole Nova Obscured by an Inner Disk Torus.

Bibcode
2013Sci...339.1048C
Corral-Santana, J. M.; Casares, J.; Munoz-Darias, T.; Tyndall, A. A.; Zurita, C.; Rodríguez-Gil, P.; Shahbaz, T.; Torres, M. A.
Referencia bibliográfica

Science, 339, 1048-1051 (2013)

Fecha de publicación:
3
2013
Revista
Science
Número de autores
8
Número de autores del IAC
5
Número de citas
86
Número de citas referidas
78
Descripción
Stellar-mass black holes (BHs) are mostly found in X-ray transients, a subclass of X-ray binaries that exhibit violent outbursts. None of the 50 Galactic BHs known show eclipses, which is surprising for a random distribution of inclinations. Swift J1357.2-0933 is a very faint X-ray transient detected in 2011. On the basis of spectroscopic evidence, we show that it contains a BH in a 2.8 h orbital period. Further, high-time resolution optical light curves display profound dips without X-ray counterparts. The observed properties are best explained by the presence of an obscuring toroidal structure moving outwards in the inner disk seen at very high inclination. This observational feature should play a key role in models of inner accretion flows and jet collimation mechanisms in stellar-mass BHs.
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